An improved limit for Γee of X(3872) and Γee measurement of ψ(3686)

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; O. Bondarenko; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; H. Y. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; X. R. Chen; Y. B. Chen; H. P. Cheng; X. K. Chu; G. Cibinetto; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; A. Dbeyssi; D. Dedovich; Z. Y. Deng; H. Muramatsu; R. Poling; BESIII Collaboration

doi:10.1016/j.physletb.2015.08.013

An improved limit for Γ_ee of X(3872) and Γ_ee measurement of ψ(3686)

M. Ablikim
, M. N. Achasov
, X. C. Ai
, O. Albayrak
, M. Albrecht
, D. J. Ambrose
, A. Amoroso
, F. F. An
, Q. An
, J. Z. Bai
, R. Baldini Ferroli
, Y. Ban
, D. W. Bennett
, J. V. Bennett
, M. Bertani
, D. Bettoni
, J. M. Bian
, F. Bianchi
, E. Boger
, O. Bondarenko

I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, H. Muramatsu, R. Poling, BESIII Collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e⁺e^-→γ_ISRX(3872)→γ_ISRπ⁺π^-J/ψ via the Initial State Radiation technique. The production of a resonance with quantum numbers J^PC=1⁺⁺ such as the X(3872) via single photon e⁺e^- annihilation is forbidden, but is allowed by a next-to-leading order box diagram. We do not observe a significant signal of X(3872), and therefore give an upper limit for the electronic width times the branching fraction Γ_ee ^X(3872)B(X(3872)→π⁺π^-J/ψ)<0.13 eV at the 90% confidence level. This measurement improves upon existing limits by a factor of 46. Using the same final state, we also measure the electronic width of the ψ(3686) to be Γ_ee ^ψ(3686)=2213±18_stat±99_sys eV.

Original language	English (US)
Pages (from-to)	414-420
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	749
DOIs	https://doi.org/10.1016/j.physletb.2015.08.013
State	Published - Oct 7 2015

Bibliographical note

Publisher Copyright:
© 2015 The Authors.

Keywords

BESIII
Charmonium spectroscopy
X(3872)
Γ
ψ(3686)

Publisher link

10.1016/j.physletb.2015.08.013

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Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., ... BESIII Collaboration (2015). An improved limit for Γ_ee of X(3872) and Γ_ee measurement of ψ(3686). Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 749, 414-420. https://doi.org/10.1016/j.physletb.2015.08.013

Ablikim, M, Achasov, MN, Ai, XC, Albayrak, O, Albrecht, M, Ambrose, DJ, Amoroso, A, An, FF, An, Q, Bai, JZ, Baldini Ferroli, R, Ban, Y, Bennett, DW, Bennett, JV, Bertani, M, Bettoni, D, Bian, JM, Bianchi, F, Boger, E, Bondarenko, O, Boyko, I, Briere, RA, Cai, H, Cai, X, Cakir, O, Calcaterra, A, Cao, GF, Cetin, SA, Chang, JF, Chelkov, G, Chen, G, Chen, HS, Chen, HY, Chen, JC, Chen, ML, Chen, SJ, Chen, X, Chen, XR, Chen, YB, Cheng, HP, Chu, XK, Cibinetto, G, Cronin-Hennessy, D, Dai, HL, Dai, JP, Dbeyssi, A, Dedovich, D, Deng, ZY, Muramatsu, H, Poling, R & BESIII Collaboration 2015, 'An improved limit for Γ_ee of X(3872) and Γ_ee measurement of ψ(3686)', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 749, pp. 414-420. https://doi.org/10.1016/j.physletb.2015.08.013

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title = "An improved limit for Γee of X(3872) and Γee measurement of ψ(3686)",

abstract = "Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e-→γISRX(3872)→γISRπ+π-J/ψ via the Initial State Radiation technique. The production of a resonance with quantum numbers JPC=1++ such as the X(3872) via single photon e+e- annihilation is forbidden, but is allowed by a next-to-leading order box diagram. We do not observe a significant signal of X(3872), and therefore give an upper limit for the electronic width times the branching fraction Γee X(3872)B(X(3872)→π+π-J/ψ)<0.13 eV at the 90\% confidence level. This measurement improves upon existing limits by a factor of 46. Using the same final state, we also measure the electronic width of the ψ(3686) to be Γee ψ(3686)=2213±18stat±99sys eV.",

keywords = "BESIII, Charmonium spectroscopy, X(3872), Γ, ψ(3686)",

author = "M. Ablikim and Achasov, \{M. N.\} and Ai, \{X. C.\} and O. Albayrak and M. Albrecht and Ambrose, \{D. J.\} and A. Amoroso and An, \{F. F.\} and Q. An and Bai, \{J. Z.\} and \{Baldini Ferroli\}, R. and Y. Ban and Bennett, \{D. W.\} and Bennett, \{J. V.\} and M. Bertani and D. Bettoni and Bian, \{J. M.\} and F. Bianchi and E. Boger and O. Bondarenko and I. Boyko and Briere, \{R. A.\} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, \{G. F.\} and Cetin, \{S. A.\} and Chang, \{J. F.\} and G. Chelkov and G. Chen and Chen, \{H. S.\} and Chen, \{H. Y.\} and Chen, \{J. C.\} and Chen, \{M. L.\} and Chen, \{S. J.\} and X. Chen and Chen, \{X. R.\} and Chen, \{Y. B.\} and Cheng, \{H. P.\} and Chu, \{X. K.\} and G. Cibinetto and D. Cronin-Hennessy and Dai, \{H. L.\} and Dai, \{J. P.\} and A. Dbeyssi and D. Dedovich and Deng, \{Z. Y.\} and H. Muramatsu and R. Poling and \{BESIII Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = oct,

day = "7",

doi = "10.1016/j.physletb.2015.08.013",

language = "English (US)",

volume = "749",

pages = "414--420",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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TY - JOUR

T1 - An improved limit for Γee of X(3872) and Γee measurement of ψ(3686)

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bian, J. M.

AU - Bianchi, F.

AU - Boger, E.

AU - Bondarenko, O.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Cakir, O.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chelkov, G.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, H. Y.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Cheng, H. P.

AU - Chu, X. K.

AU - Cibinetto, G.

AU - Cronin-Hennessy, D.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Muramatsu, H.

AU - Poling, R.

AU - BESIII Collaboration

PY - 2015/10/7

Y1 - 2015/10/7

N2 - Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e-→γISRX(3872)→γISRπ+π-J/ψ via the Initial State Radiation technique. The production of a resonance with quantum numbers JPC=1++ such as the X(3872) via single photon e+e- annihilation is forbidden, but is allowed by a next-to-leading order box diagram. We do not observe a significant signal of X(3872), and therefore give an upper limit for the electronic width times the branching fraction Γee X(3872)B(X(3872)→π+π-J/ψ)<0.13 eV at the 90% confidence level. This measurement improves upon existing limits by a factor of 46. Using the same final state, we also measure the electronic width of the ψ(3686) to be Γee ψ(3686)=2213±18stat±99sys eV.

AB - Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e-→γISRX(3872)→γISRπ+π-J/ψ via the Initial State Radiation technique. The production of a resonance with quantum numbers JPC=1++ such as the X(3872) via single photon e+e- annihilation is forbidden, but is allowed by a next-to-leading order box diagram. We do not observe a significant signal of X(3872), and therefore give an upper limit for the electronic width times the branching fraction Γee X(3872)B(X(3872)→π+π-J/ψ)<0.13 eV at the 90% confidence level. This measurement improves upon existing limits by a factor of 46. Using the same final state, we also measure the electronic width of the ψ(3686) to be Γee ψ(3686)=2213±18stat±99sys eV.

KW - BESIII

KW - Charmonium spectroscopy

KW - X(3872)

KW - Γ

KW - ψ(3686)

UR - https://www.scopus.com/pages/publications/84939817891

UR - https://www.scopus.com/pages/publications/84939817891#tab=citedBy

U2 - 10.1016/j.physletb.2015.08.013

DO - 10.1016/j.physletb.2015.08.013

M3 - Article

AN - SCOPUS:84939817891

SN - 0370-2693

VL - 749

SP - 414

EP - 420

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -